Valve-gear.



No. 655.927. Patented Aug. l4, I900. c. n. P.6IBSON. VALVE GEAR.

(Application filed July 18, 1889.) (No Model) 2 Sheets-Sheet l.

Inuerzfar No. 655,927. Patented Aug. l4, I900.

C. D. P. GIBSON.

VALVE GEAR.

I (Application filed July 18, 1899.) (No Model.) 2 Sheets-Sheet 2.

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CHARLES D. P. GIBSON, OF JERSEY CITY, NEW JERSEY.

VALVE-G EAR.

SPECIFICATION forming part of Letters Patent No. $55,927, dated August1.4, 1900. Application filed July 18,1899 Serial no. 724,268. (Nomodel.)

T0 on whom it may concern:

Be it known that I, CHARLES D. P. GIBSON, a citizen of the UnitedStates, residing at Jersey City, in the county of Hudson and State ofNew Jersey, have invented new and useful Improvements in Valve-Gears, ofwhich the following is a specification.

Myinvention relates to valve-gear for fluidpressure motors or engines,and contemplates the provision of a valve-gear which while adapted topermit of an engine being quickly .and is illustrated and described insaid application. It may, however, be used to advantage in various otherconnections.

The construction and operation of the gear will be fully understood fromthe following description and claims, when taken. in conjunction withthe annexed drawings, in which- Figure 1 is a longitudinal verticalsection illustrating my improved valve-gear. Fig. 2 is a plan view ofsaid valve-gean. Figs. 3 and 4 are detail enlarged sections taken in theplanes indicated by the lines 3 3 and a 4, respectively, of Fig. 2. Fig.5 is an enlarged detail section taken through a portion of thevalve-gear.

In the said drawings similar letters designate corresponding parts inall of the several views, referring to which--- A is the bed of anengine; B, adrive-shaft journaled in standards a, rising from the bedand equipped with cranks (J; D, rods connected to the cranks C anddesigned to be connected with pistons, (not shown,) and E rods which aredesigned to be connected with valves (not shown) for controlling theinduc tion and eduction ports of the cylinders con taining the saidpistons.

The cranks C are disposed as shown, and hence it is necessary tosimultaneously move the pistons to which the rods D are connected inopposite directions. To this end I provide a valve-gear comprisingoppositely-disposed eccentrics F on the shaft 13, links G, having straps19, receiving the eccentrics, link-blocks H, arranged in the links, androds I, interposed between and pivotally connected to the link blocksand valve-rods E. By reason of this gear the valve-rods E will besimultaneously moved in opposite directions, as will also thepiston-rods D.

For the purpose of adjusting the links and valves I provide theturn-rods J, which have oppositely-threaded ends arranged in threadedSockets 0 (l, pivotally connected to the links G and bed A,respectively, as shown.

In order to enable the engineer to readily reverse the direction ofmovement of the engine, the reversing mechanism (best'shown in Fig. 1)is provided. This mechanism is supported by a shaft 6, arranged instandardsf, rising from the bed A, and in the preferred embodiment ofthe invention comprises arms 9, loose on the shaft 6 and connectedbylinks It on the rods I, collars 1', fast to the shaft 6 and havingshoulders j, (see Fig. 5,) designed for the engagement of similarshoulders on the arms g, a spacing-collar it, loose on the shaft, alever Z, fast on the shaft a lever m, loose on the shaft e and having anarm a, connected to a resilient strap p, interposed between the arms 9,a rod 1", having a lateral arm 8, and .a link 2, connecting said arm 3and the lever m. The rod 4" is designed to be connected with a lever orother suitable handle, (not shown,) and when it is moved in thedirection indicated by arrow in Fig. l and the lever lis swung forwardlythe lower shoulders 3' mi of the collars ft abutting against the lowershoulders of the arms g will swing said arms g and the rods I upwardly,and thereby raise the blocks Hto the upper ends of the links G andreverse the engine. At the same time the lever m, by reason of theconnection between the same and rod '1', is swung forward at a greaterrate of speed than the lever Z, and its arm n is swung upward fasterthan the arms g, with the result that when said arms g reach theiruppermost position the resilient strap 19 will be bowed upwardly, andconsequently enabled to securely hold the link-blocks H against casualmovement from their position at the upper ends of the links Gr. hen, onthe other hand, the rod 0* is moved in the direct-ion opposite to thatindicated by arrow and thelink-blocks H are carried at the lower ends ofthe links G, the resilient strapp will be bowed downwardly, and henceenabled to hold the link-blocks against casual upward movement.

Itfollows from the foregoing that while the engine may be quickly andeasily reversed whenever the engineer so desires there is no liabilityof said engine being casually reversed, which is an important advantage.

The collars 2' and arms g are so arranged with respect to each other asto afford lost motion and permit a slight oscillatory movement of thesaid arms 9 incident to the reciprocatory movements of the rods I, andfor the same reason the arm n is made in two sections, which areconnected together after the manner of a swivel, as best shown in Fig.4.

When desirable, a spring, such as M, may be interposed between the rod0" and the bed A for the purpose of assisting in returning the parts tothe position shown in Fig. 1, which is the normal running position. Saidspring is not, however, essential and may be dispensed with, if desired.

Having thus described my invention, what I claim is- 1. In a valve gearor mechanism, the combination of a valve-rod, an eccentric, a linkhaving a strap receiving the eccentric, a linkblock, a rod connectingsaid block and the valve-rod, two levers of different lengths fulcrnmedon a common center; the larger of said levers being connected with therod between the link-block and the valve-rod, and a resilient connectionbetween said levers, substantially as specified.

2. In a valve gear or mechanism, the combination of a valve-rod, aneccentric, a link having a strap receiving the eccentric, alinkblockconnected with the valve-rod, and two levers mounted on a common center;one of said levers being connected with the linkblock and the otherlever being arranged to move faster than the first-named lever and beingconnected thereto by a resilient device adapted to bow, substantially asspecified.

blocks, rods connecting said blocks and the valve-rods, asuitably-supported shaft, arms mounted on the shaft and connected withsaid rods, a resilient strap interposed between said arms, a lever onthe shaft for rocking the said arms, a smaller lever on the shaft havingan arm connected to the resilient strap, and an operating-rod connectedto the larger lever and having a lateral arm connected with the smallerlever, substantially as specified.

4. In a valve gear or mechanism, the combination of valve-rods,eccentrics, links having straps receiving the eccentrics, linkblocks,rods connecting said blocks and the valve-rods, a suitably-supportedshaft, arms mounted on said shaft and connected with the latter rods, aresilient strap interposed between said arms, a lever on the shaft forrocking the said arms, a smaller lever ful- ,crumed on the shaft andhaving an arm connected to the resilient strap and comprising twosections connected in a swiveled manner, and means for operating thelevers, substantially as specified.

5. In a valve gear or mechanism, the combination of a valve-rod, aneccentric, a link having a strap receiving the eccentric, a linkblockconnected with the valve-rod, a lever connected with thelink-block, asecond 1ever, an operating device for rocking the levers, and aconnection between the levers whereby the link-block is held againstcasual movement when moved to either end of the link, substantially asspecified.

6. The combination with the link-block of a valve-gear; of a lever formoving the linkblock, a second lever arranged to move faster than thefirst-named lever, and means controlled by the second lever whereby thelinkblock is held against casual movement when moved to either end ofthe link of the valvegear, substantially as specified.

7. The combination with the link-block of a valvegear; of a lever formoving the linkblock, a second lever of less length than the firstnamedlever; said levers being fulcrumed on a common center, means for rockingthe levers, and means controlled by the second lever whereby thelink-block is held against casual movement when moved to either end ofthe link of the valve-gear. substantially as specified.

8. The combination with the link of a valvegear, and a valve-controllingblock fitted to slide therein; of means for quickly moving the block toeither end of the link, and a block-controlling device connected to andactuated from the block-moving means for holding the block positively inits set position against either end of the link.

9. The combination with link-blocks of a valve-gear; of a lever,connections between the lever and blocks, a second lever, and meansoperated by the second lever for holdin g the blocks against casualmovement, substantially as specified.

10. The combination with the link-blocks of a valve-gear; of armsmounted on a shaft and connected with the blocks, an arm mounted on theshaft between the first-named arms, a spring-strap interposed betweenand connected to the outer arms and also connected to the intermediatearm, and means for moving the intermediate arm faster than the outerarms, substantially as specified.

In testimony whereof I have hereunto set my hand in presenceof' twosubscribing witnesses.

CHARLES D. P. GIBSON.

Witnesses:

CARL LUoK, HARRY SHICK.

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